<!DOCTYPE html>
<html>
<head>
    <title>防抖</title>
    <script src="../../src/function/debounce.js"></script>
</head>
<body>
    <input type="text" />
    <script>
       let input = document.querySelector('input');

    //    input.onkeydown = function(e) {
    //     console.log(e.keyCode)
    //    }

    input.onkeydown = debounce(function(e) {
        console.log(e.keyCode)
    }, 1000);
    </script>
</html>